Illumination in first feeding tanks for marine fish larvae
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http://hdl.handle.net/11250/105050Utgivelsesdato
1992Metadata
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This report is not to be cited without prior reference to the authorsSammendrag
Illumination levels were measured in three artificially illuminated tanks: a black tank, a white
tank and a tank with black sides and white bottom, in order to test how well normal tank
illumination in different tank types corresponds to natural illumination conditions for flrst
feeding of marine fish larvae. Measurements were made with clear water and with algae
added ("green water").
The black tank had low wall and bottom illumination. The white tank had high wall and
bottom illumination. The black walled white bottomed tank had low wall and high central and
bottom illumination. Green water attenuated light substantially. The black tank seemed best
suited to reproduce natural illumination conditions. The white tank was not suited. The black
walled white bottomed tank had interesting properties, but species specific tests would have
to be carried out to fine tune the reflective properties of the bottom. Green water seemed to
be beneficial in all tests.